Answer:
I hope this is what you were asking for :)
The first one is A, the third is D, the fourth is D, the fifth is 4, the sixth is D, the seventh is D, the tenth is D. Sorry I couldn't do all but some.
What do you have to estimate?
Christy dove to the depth of 12 feet below the surface = -12 feet
(Below sea level means to be below zero, which are negative numbers)
Christy dove 12 feet back up to the surface= +12 feet
( When we come back up to the surface, the distance is taken always positive)
Therefore, we have to find the overall change,
Overall change = -12 feet + 12 feet
= -12 feet + 12 feet
= 0 ft.
Therefore, overall change is 0 ft.
360°÷n = number of sides of a regular polygon.
n= one of the exterior angle of a regular polygon.
180°-60°=120°
n=120°
360°÷120°= 3
